Hybrids of Reduced Graphene Oxide Aerogel and CNT for Electrochemical O2 Reduction

Hernández‐Ferrer, Javier; Benito, Ana M.; Maser, Wolfgang K.; García‐Bordejé, Enrique

doi:10.3390/catal11111404

Cited by 5 publications

(2 citation statements)

References 60 publications

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“…GO has been shown in the literature that it can be organized into lightweight, porous, 3D structures such as aerogels, foams, or sponges in several ways. However, some structural disadvantages, mainly fragility and mechanical instability, restrict their use in several applications such as supercapacitors, batteries, membranes for water purification or gas separation, and electromagnetic interference shielding [ 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Highly Elastic Melamine Graphene/MWNT Hybrid Sponge for Sensor Applications

2022

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The rapidly increased interest in multifunctional nanoelectronic devices, such as wearable monitors, smart robots, and electronic skin, motivated many researchers toward the development of several kinds of sensors in recent years. Flexibility, stability, sensitivity, and low cost are the most important demands for exploiting stretchable or compressible strain sensors. This article describes the formation and characteristics of a flexible, low-cost strain sensor by combining a commercial melamine sponge and a graphene/carbon nanotubes hybrid. The composite that emerged by doping the highly elastic melamine sponge with a highly conductive graphene/carbon nanotubes hybrid showed excellent piezoresistive behavior, with low resistivity of 22 kΩ m. Its function as a piezoresistive material exhibited a high sensitivity of 0.050 kPa−1 that combined with a wide detection area ranging between 0 to 50 kPa.

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Section: Introductionmentioning

confidence: 99%

Highly Elastic Melamine Graphene/MWNT Hybrid Sponge for Sensor Applications

2022

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“…In Ref. [16] the authors obtained a composite material suitable for the oxygen electrochemical reduction, and in Ref. [17] the authors reported on producing the adsorbent with magnetic properties.…”

Section: Introductionmentioning

confidence: 99%

Influence of the sign of the zeta potential of nanodiamond particles on the morphology of graphene-detonation nanodiamond composites in the form of suspensions and aerogels

et al. 2022

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A new method of using the detonation nanodiamond with positive and negative zeta potential as a spacer for aerogels based on graphene oxide is presented. It is shown that the dosed addition of detonation nanodiamonds' particles to the suspension of graphene oxide hydrosol made it possible to triple the specific surface area of the resulting aerogel compared to graphene oxide aerogel, and this effect is more significant when nanodiamonds with a positive zeta potential are used. It was also shown that aerogels derived from graphene oxide and detonation nanodiamond with a positive zeta potential have a specific morphology with graphene oxide platelets being twisted. This effect is discussed in terms of the change in the average zeta potential of the initial mixtures. Keywords: two-component systems, carbon materials, colloid chemistry.

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Development of new magnetic nanocomposite designed by reduced graphene oxide aerogel and HKUST-1, and its catalytic application in the synthesis of polyhydroquinoline and 1,8-dioxo-decahydroacridine derivatives

Farzaneh,

Radinekiyan,

Naimi-Jamal

et al. 2023

Sci Rep

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In this study, new magnetic reduced graphene oxide aerogel/HKUST-1 nanocomposite was designed and synthesized given the transformation of graphene oxide sheets to three-dimensional reduced graphene oxide aerogel, the in-situ magnetization of aerogel substrate, and the in-situ formation of HKUST-1 particles. Apart from characterizing the chemistry and structure of the designed magnetic nanocomposite (FT-IR, EDX, ICP, FE-SEM, DLS, XRD, VSM, and TG analyses), its catalytic performance was evaluated in the one-pot synthesis of biologically active 1,8-dioxo-decahydroacridine and polyhydroquinoline derivatives. The combination of magnetized reduced graphene oxide aerogel and HKUST-1 in the form of a new heterogeneous magnetic nanocatalyst was accompanied by a high synergetic catalytic effect in the symmetric and unsymmetrical Hantzsch condensation reactions. Compared to previous research studies, the pharmaceutical 1,8-dioxo-decahydroacridine and polyhydroquinoline derivatives can be synthesized using a partial amount of this nanocatalyst with a high percentage of yields in a short reaction time.

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Hybrids of Reduced Graphene Oxide Aerogel and CNT for Electrochemical O2 Reduction

Cited by 5 publications

References 60 publications

Highly Elastic Melamine Graphene/MWNT Hybrid Sponge for Sensor Applications

Highly Elastic Melamine Graphene/MWNT Hybrid Sponge for Sensor Applications

Influence of the sign of the zeta potential of nanodiamond particles on the morphology of graphene-detonation nanodiamond composites in the form of suspensions and aerogels

Development of new magnetic nanocomposite designed by reduced graphene oxide aerogel and HKUST-1, and its catalytic application in the synthesis of polyhydroquinoline and 1,8-dioxo-decahydroacridine derivatives

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